Breeding Activity Peak Period Range Duration (days) Laying May May 2 to 26. Incubation Early May to mid June Early May to mid June 30 to 34
|
|
- Hannah Hardy
- 5 years ago
- Views:
Transcription
1 Snowy Owl Bubo scandiacus 1. INTRODUCTION s have a circumpolar distribution, breeding in Fennoscandia, Arctic Russia, Alaska, northern Canada and northeast Greenland. They are highly nomadic and may migrate southwards in the winter, when a few may reach Britain and Ireland. The numbers of owls that are found in winter in southern areas may be linked to cyclic fluctuations in small mammal populations in the Arctic, with more individuals coming south when populations crash (Gross, 1947). Breeding has been recorded in Scotland and Ireland. A pair of snowy owls bred successfully on Fetlar in Shetland from 1967 to 1975 after which time the male disappeared and was not replaced, although 2-4 females were regularly recorded on the island in subsequent years and infertile eggs were laid several times (Thom, 1986; Gibbons et al., 1993; Pennington, 2007). In Ireland, a pair bred unsuccessfully in Glenveagh National Park in Donegal in 2001 and there is also anecdotal evidence that a pair bred successfully in West Donegal in 1999, with reports from local people of five white owls in an area where an adult pair were photographed. Birds have summered in other parts of Scotland and Ireland but breeding has not been recorded. The snowy owls that bred in Shetland were sedentary. Male snowy owls are whiter and smaller than the females. Immature birds can be distinguished from adults by their heavy barring until they moult at one year of age (Cramp, 1985; Mikkola, 1983). The age of first breeding is not known but is probably not until at least two years old (Cramp, 1985). Annual cycle Breeding Activity Peak Period Range Duration (days) Occupation of home range Courtship All year (Shetland) Early April to mid May Laying May May 2 to 26 Incubation Early May to mid June Early May to mid June 30 to 34 Hatching June June Young in nest June to July June to July 14 to 28 Fledging July to August At 43 to 50 days old Juvenile dispersal September Note that most of the timings given here do not refer to Britain and Ireland but they should still give a reasonable approximation; exact timings are very variable across the breeding range, depending on snow thaw. Raptors: a field guide for surveys and monitoring 199
2 2. HABITAT, HOME RANGE, NESTS AND BREEDING 2.1 Habitat In the Arctic, snowy owls breed in low open tundra, often near the coast (Cramp, 1985). In Norway, they breed on mountain plateaux at 1,100 1,500 m ASL (Bannerman, 1955). They avoid damp areas and use dry hummocks, tussocks and rocks as perches (Cramp, 1985). In Britain and Ireland, snowy owls have frequented arctic/alpine mountain plateaux and heather/ grass moorland as well as coastal farmland and machair. 2.2 Home range In the breeding season, the size of the home range varies with the food supply; in suitable terrain with a favourable food supply, it can be as small as 75 ha (Watson, 1957). Only the immediate nesting territory is defended. s are solitary in winter. In Canada, males tend to be nomadic, while females defend territories of ha in extent for periods of up to 80 days (Boxall & Lein, 1982). 2.3 Nest sites s nest on the ground, normally on a raised hummock, rocky outcrop or ridge where the snow melts early. 2.4 Nests The nest is a slight scrape, which may be lined with small pieces of vegetation. Nests are not normally re-used in successive seasons (Watson, 1957). The nests in Shetland were on open moorland with grass, heather and rocky outcrops (Sharrock, 1976). in Glenveagh, Ireland, the nest was in blanket bog on the slope of a raised valley with rocky outcrops and dry heath nearby. 2.5 Clutch size and incubation Clutch size varies with the availability of food and ranges from 2 14 eggs (normally 3 9). The pair that bred in Shetland produced one clutch of four eggs, four clutches of five eggs, three clutches of six eggs and one clutch of seven eggs (M. Robinson in Cramp, 1985). In Ireland the pair which bred in Glenveagh in 2001 laid four eggs. The eggs are laid at 2-day intervals and are incubated for an average of 32 days (range days) (Mikkola, 1983; Cramp, 1985). Incubation, which begins with the first egg, is carried out by the female who is fed on the nest by the male (Cramp, 1985). 2.6 Brood size and fledging The eggs hatch asynchronously and the young are brooded by the female for about 21 days (Cramp, 1985) or until they leave the nest. The male provides food to the female who feeds the young (Mikkola, 1983), with both sexes foraging for food once the young are well-grown. There is evidence that the male may feed chicks once they have left the nest (Taylor, 1973); in Shetland, large young took prey from the male but he was often prevented from feeding young by the female (Tulloch, 1969; Mikkola, 1983). At one nest in southern Norway, prey items were delivered every minutes between 23:00h and 01:00h (Hagen, 1960; cited in Mikkola, 1983 and Cramp, 1985). In Shetland, 91% of prey items were brought to young between 18:00h and 06:00h, and 60% of these were between 21:00h and 03:00h (Tulloch, 1969). From days of age, the young may leave the nest and hide in the surrounding vegetation. They fledge at days (average 45 days, M. Robinson in Cramp, 1985) but do not become independent for at least a further 2 5 weeks. 200 Raptors: a field guide for surveys and monitoring
3 3. SURVEY TECHNIQUES CAUTION s should not be disturbed during laying or incubation. Due to the rarity of the species within Britain and Ireland, all observations on the breeding of this species should be made from a distance, unless there is a specific need to collect information on clutch or brood size. 3.1 Breeding season visit schedule The species is listed on Schedule 1 in Great Britain (see Section of Introduction). It is recommended that at least two visits (Visits 1 and 4) are made to confirm occupancy and breeding, even if no signs of occupancy are found during the earlier visit(s). s are most active between dusk and dawn although during midsummer at high latitudes they must also hunt by daylight. They can be located by searching for roosting birds (which are often conspicuous) during the daytime. Visits to view active birds should be made during the evening or early morning. Visit 1 April to early May To check for occupancy Visit 2 May To locate active nests Visit 3 June to July To check for young Visit 4 August To check for fledged young 3.2 Signs of occupancy Locating home ranges s are large and conspicuous and can sit motionless for long periods. Male snowy owls carry out display flights (usually when the female is close by), involving flying with wings held in a deep V at the top of each stroke, causing undulating flight, with drops of m between down-strokes. Such flights are probably most frequent and complete early in the season, may involve the male carrying prey, and may be followed by a mantling display on the ground once the prey is dropped (Taylor,1973; Cramp, 1985). Once a pair of owls has been seen or is suspected to be present, the fieldworker should search the area systematically, checking all rocky areas for sitting birds. The location of any snowy owl signs (moulted feathers and pellets) should also be noted. Searches are easier if there is no snow and snowy owls will use the first areas to become clear of snow Locating roosts s roost on the ground during the day and are large and conspicuous enough to be seen from some distance Recognition of signs pellets are large, ( mm long x mm diameter), irregular and loosely compressed, containing large bone fragments from prey such as rodents, rabbits and birds (Mikkola, 1983; Cramp, 1985; Brown et al., 2003). They are distinctive in that they often contain snowy owl feathers Evidence for occupancy Sightings of a single bird or a pair on several occasions within the same area provide evidence for occupancy. Raptors: a field guide for surveys and monitoring 201
4 3.3 Evidence of breeding Locating active nests s normally nest on dry hummocks or ridges, where the snow melts early. Systematic searches of all suitable areas should be made with appropriate care taken to avoid disturbing incubating females. During the day, the male may be found perched near to the nest. Nests may also be located through observations of hunting owls in the evening or early morning when snowy owls may carry prey directly back to the nest. Even if the owls are not observed going as far as the nest, the direction in which the prey is carried can suggest where searches should be made subsequently Evidence for fledging Counts can be made of recently fledged chicks close to the nest, and they are particularly conspicuous when an adult brings prey. Before fledging, large young are more difficult to count, as they leave the nest and hide. 3.4 Evidence for non-breeding If a pair of snowy owls occupies a nesting territory, and an active nest or fledged young are not found despite comprehensive searches at the appropriate times, then this provides evidence for non-breeding. 3.5 Ageing and sexing young No measurement data for ageing and sexing young have been found. As a guide, the white first down is replaced by grey second down from 5-10 days, and chicks appear grey from 8-14 days (Cramp, 1985). At 10 days old the face is dark grey with a characteristic white X-mark between the eyes, which looks more obvious by days, and then gradually disappears as white feathers grow in over the face (Cramp, 1985; Mikkola, 1983; Figure 39). For developing chicks on Shetland, Tulloch (1969) reports that the eyes were fully open by 9 days and by 23 days the irides were the same golden yellow as the adults; the whitish primaries and tail feathers were visibly sprouting by about 30 days. Figure 39. Facial patterns of young snowy owl at 10 days (left) and 18 days (Mikkola, 1983; reproduced with kind permission of A & C Black). 202 Raptors: a field guide for surveys and monitoring
5 4. SURVEYS OUTSIDE THE BREEDING SEASON The number of snowy owls holding winter territories in an area can be surveyed using the methods in Section s have crepuscular and nocturnal foraging habits in the winter, remaining largely inactive during the day (Boxall & Lein, 1989). Raptors: a field guide for surveys and monitoring 203
Long-eared Owl. For further information on the biology and ecology of this species, Scott (1997) provides a comprehensive account.
Long-eared Owl Asio otus 1. INTRODUCTION The long-eared owl is a widespread but scarce breeding bird in Britain. It was probably more common in the late 19th century, but numbers declined during the 20th
More informationFor further information on the biology and ecology of this species, Clarke (1996) provides a comprehensive account.
Circus pygargus 1. INTRODUCTION Montagu s harriers are rare in Britain and Ireland, breeding regularly only in central, southeast, southwest and east England (Ogilvie & RBBP, 2004; Holling & RBBP, 2008).
More informationFor further information on the biology and ecology of this species, Clarke (1995) provides a comprehensive account.
Circus aeruginosus 1. INTRODUCTION The marsh harrier (western marsh harrier) is increasing as a breeding species in Great Britain (Gibbons et al., 1993; Underhill-Day, 1998; Holling & RBBP, 2008) with
More informationBreeding Activity Peak Period Range Duration (days) Egg laying Late May to early June Mid-May to mid-july 3 to 10
Pernis apivorus 1. INTRODUCTION The honey-buzzard (European honey buzzard) was traditionally regarded as breeding mainly in southern and southwest England, but breeding pairs have been found increasingly
More informationBreeding Activity Peak Period Range Duration (days) Egg laying Mid-March to early April Early March to mid-april 3 to 6 (for clutch of 2)
Golden Eagle Aquila chrysaetos 1. INTRODUCTION The British golden eagle population is largely confined to the remote mountainous areas of the Highlands and Islands of Scotland, north and west of the Highland
More informationFor further information on the biology and ecology of this species, Chapman (1999) provides a comprehensive account.
Falco subbuteo 1. INTRODUCTION The main breeding range of the hobby (Eurasian hobby) in Britain and Ireland lies in England, south of the Mersey/Humber line and extending into the borders of Wales. The
More informationBreeding Activity Peak Period Range Duration (days) Site occupation and territorial display Early April Mid-March to early May
Pandion haliaetus 1. INTRODUCTION The osprey (western osprey) is generally considered to have recolonised Scotland in 1954, after ceasing to breed about 1916 (Thom, 1986). Recently, however, it has been
More informationBreeding Activity Peak Period Range Duration (days) Egg laying Late April to mid-may Mid-April to late June 5 to 12
Circus cyaneus 1. INTRODUCTION The hen harrier breeds mainly in the north and west of Great Britain, in Ireland and on the Isle of Man (Gibbons et al., 1993; Sim et al., 2001, 2007; Norriss et al., 2002).
More informationBreeding Activity Peak Period Range Duration (days) Egg laying Early April Mid-March to early May 3 to 12
Accipiter gentilis 1. INTRODUCTION The (northern goshawk) stopped breeding regularly in Britain and Ireland in the 1880s. Breeding became regular again from the mid 1900s, as a result of deliberate (unauthorised)
More informationIntroduction. Description. This bird
Introduction This bird has disks of stiff feathers around its eyes that reflect sound waves to its ear openings must capture the equivalent of 7 to 12 mice a day to meet its food requirements is active
More informationFact sheet. Ted Busby. 50years of showing you Who s Who. Snowy Owl x Bubo scandiacus
Ted Busby 50years of showing you Who s Who x Bubo scandiacus quick facts x Bubo scandiacus This bird n has disks of stiff feathers around its eyes that reflect sound waves to its ear openings n must capture
More informationWhat is the date at which most chicks would have been expected to fledge?
CURLEW FAQs FACTS AND FIGURES AND ADVICE FOR THOSE WANTING TO HELP SUPPORT NESTING CURLEW ON THEIR LAND The Eurasian Curlew or, Numenius arquata, spends much of the year on coasts or estuaries, but migrates
More informationEIDER JOURNEY It s Summer Time for Eiders On the Breeding Ground
The only location where Steller s eiders are still known to regularly nest in North America is in the vicinity of Barrow, Alaska (Figure 1). Figure 1. Current and historic Steller s eider nesting habitat.
More informationRed-Tailed Hawk Buteo jamaicensis
Red-Tailed Hawk Buteo jamaicensis This large, dark headed, broad-shouldered hawk is one of the most common and widespread hawks in North America. The Red-tailed hawk belongs to the genus (family) Buteo,
More informationWe are adult American. Field Marks. We are the smallest falcons in North America. Like other falcons, we have long, pointed wings,
We are adult American Kestrels. Our scientific name is Falco sparverius. Field Marks We are the smallest falcons in North America. Like other falcons, we have long, pointed wings, long tails, and we flap
More informationKey concepts of Article 7(4): Version 2008
Species no. 25: Goosander Mergus merganser Distribution: Holarctic, with a wide breeding range across Eurasia and North America in forested tundra between 50 N and the Arctic Circle. The wintering range
More informationKey concepts of Article 7(4): Version 2008
Species no. 32: Rock Partridge Alectoris graeca Distribution: This European endemic partridge inhabits both low-altitude rocky steppes and mountainous open heaths and grasslands. It occurs in the Alps,
More informationSpecies Fact Sheets. Order: Caprimulgiformes Family: Podargidae Scientific Name: Podargus strigoides Common Name: Tawny frogmouth
Order: Caprimulgiformes Family: Podargidae Scientific Name: Podargus strigoides Common Name: Tawny frogmouth AZA Management: Green Yellow Red None Photo (Male): Species is monomorphic Photo (Female): NATURAL
More informationSpecies Fact Sheets. Order: Gruiformes Family: Cariamidae Scientific Name: Cariama cristata Common Name: Red-legged seriema
Order: Gruiformes Family: Cariamidae Scientific Name: Cariama cristata Common Name: Red-legged seriema AZA Management: Green Yellow Red None Photo (Male): Red-legged seriemas are identical in plumage although
More informationHawks Order Falconiformes
Hawks Hawks are grouped into four basic types depending on their physical features and food preferences: accipiters, buteos, falcons and harriers. In nature, when different species react to competition
More informationCiccaba virgata (Mottled Owl)
Ciccaba virgata (Mottled Owl) Family: Strigidae (Typical Owls) Order: Strigiformes (Owls) Class: Aves (Birds) Fig. 1. Mottled owl, Ciccaba virgata. [http://www.owling.com/mottled13.htm, downloaded 12 November
More informationPORTRAIT OF THE AMERICAN BALD EAGLE
PORTRAIT OF THE AMERICAN BALD EAGLE Objectives: To know the history of the bald eagle and the cause of it's decline. To understand what has been done to improve Bald Eagle habitat. To know the characteristics
More informationOBSERVATIONS OF HAWAIIAN
- - - - ------ - - - - - OBSERVATIONS OF HAWAIIAN HAWKACTIV ltv Spring 1985 Jack Jeffries P. O. Box 518 Volcano, HI 96785 .. INTRODUCTION This report is part of a continuing study to provide baseline data
More informationScottish Natural Heritage Diversionary feeding of hen harriers on grouse moors. a practical guide
Scottish Natural Heritage Diversionary feeding of hen harriers on grouse moors a practical guide Contents 1 Contents 2 Introduction 5 Diversionary feeding harriers in the spring 5 Where to put the food
More informationThe hen harrier in England
The hen harrier in England working today for nature tomorrow The hen harrier in England The hen harrier is one of England s most spectacular birds of prey and it is an unforgettable sight to watch this
More informationRaptor Ecology in the Thunder Basin of Northeast Wyoming
Raptor Ecology in the Thunder Basin Northeast Wyoming 121 Kort Clayton Thunderbird Wildlife Consulting, Inc. My presentation today will hopefully provide a fairly general overview the taxonomy and natural
More informationSOME PHOTOGRAPHIC STUDIES OF THE PINK-FOOTED GOOSE
SOME PHOTOGRAPHIC STUDIES OF THE PINK-FOOTED GOOSE Photographed by ARNOLD BENINGTON, NIALL RANKIN and G. K. YEATES (Plates 9-16) THE Pink-footed Goose (Anser brachyrhynchus) breeds in east Greenland {between
More informationBy Hans Frey ¹ ² & Alex Llopis ²
1/7 By Hans Frey ¹ ² & Alex Llopis ² ¹ Verein EGS-Eulen und Greifvogelschutz, Untere Hauptstraße 34, 2286 Haringsee, Austria. Phone number +43 2214 84014 h.frey@4vultures.org ² Vulture Conservation Foundation
More informationWestern Snowy Plover Recovery and Habitat Restoration at Eden Landing Ecological Reserve
Western Snowy Plover Recovery and Habitat Restoration at Eden Landing Ecological Reserve Prepared by: Benjamin Pearl, Plover Program Director Yiwei Wang, Executive Director Anqi Chen, Plover Biologist
More informationBobcat. Lynx Rufus. Other common names. Introduction. Physical Description and Anatomy. None
Bobcat Lynx Rufus Other common names None Introduction Bobcats are the most common wildcat in North America. Their name comes from the stubby tail, which looks as though it has been bobbed. They are about
More informationBLACK OYSTERCATCHER NEST MONITORING PROTOCOL
BLACK OYSTERCATCHER NEST MONITORING PROTOCOL In addition to the mid-late May population survey (see Black Oystercatcher abundance survey protocol) we will attempt to continue monitoring at least 25 nests
More informationIdentification of gulls in the field can be both difficult and challenging.
Identification of adult gulls in Finnmark WWW.BIOFORSK.NO/FUGLETURISME Information sheet for the project «Bird tourism in central and eastern Finnmark», a project part of «The natural heritage as a value
More informationINSTRUCTIONS BOOK Follow these steps to construct your Owl Minibook.
LEFT LEFT C LEFT LEFT RIGHT INSTRUCTIONS COVER BOOK Follow these steps to construct your Owl Minibook. 2. 3. 1. Print this file. 2. Cut along the dotted lines around the pages. Do not cut out the shape
More informationEgyptian vulture (Neophron percnopterus) research & monitoring Breeding Season Report- Beypazarı, Turkey
Egyptian vulture (Neophron percnopterus) research & monitoring - 2011 Breeding Season Report- Beypazarı, Turkey October 2011 1 Cover photograph: Egyptian vulture landing in Beypazarı dump site, photographed
More informationGame Ranging / Field Guiding Course. Kites and Buzzards
1 Module # 6 Component # 5 Kites and Buzzards Kites The species that are included in this group are pretty much a mixed bag, put together for convenience, and do not reflect any taxonomic affinity. Of
More informationBREEDING ECOLOGY OF THE LITTLE TERN, STERNA ALBIFRONS PALLAS, 1764 IN SINGAPORE
NATURE IN SINGAPORE 2008 1: 69 73 Date of Publication: 10 September 2008 National University of Singapore BREEDING ECOLOGY OF THE LITTLE TERN, STERNA ALBIFRONS PALLAS, 1764 IN SINGAPORE J. W. K. Cheah*
More information4B: The Pheasant Case: Handout. Case Three Ring-Necked Pheasants. Case materials: Case assignment
4B: The Pheasant Case: Handout Case Three Ring-Necked Pheasants As you can see, the male ring-necked pheasant is brightly colored. The white ring at the base of the red and green head stand out against
More informationBald Eagles in the Yukon. Wildlife in our backyard
Bald Eagles in the Yukon Wildlife in our backyard The Bald Eagle at a glance Both male and female adult Bald Eagles have a dark brown body and wings with a white head, neck and tail. They have a yellow
More informationGreat Blue Heron Chick Development. Through the Stages
Great Blue Heron Chick Development Through the Stages The slender, poised profiles of foraging herons and egrets are distinctive features of wetland and shoreline ecosystems. To many observers, these conspicuous
More informationBroad-winged Hawk. Visual identification tips. Other flight silhouettes
Rough-legged Hawk L = 21 in., WS = 53 in. Wt. = 2.2 lb. Pale chest and head Relatively small bill Feathered legs and small feet Habitat Open country, fields and marshes, nests on Arctic tundra Behavior
More informationSOUTH-EASTERN LONG-EARED BAT, Nyctophilus corbeni. SQUIRREL GLIDER, Petaurus norfolcensis
SOUTH-EASTERN LONG-EARED BAT, Nyctophilus corbeni South-eastern long eared bats occur in a range of inland woodlands. Their distribution is quite large, but the animals themselves are rare and thus little
More information( 162 ) SOME BREEDING-HABITS OF THE LAPWING.
( 162 ) SOME BREEDING-HABITS OF THE LAPWING. BY R. H. BROWN. THESE notes on certain breeding-habits of the Lapwing (Vanettus vanellus) are based on observations made during the past three years in Cumberland,
More informationThe Peregrine Falcon. BY: Alicia Saichareune
The Peregrine Falcon BY: Alicia Saichareune Table of Contents Page 2: Peregrine Falcons are Fast! Page 3: Peregrine Falcons Return Page 4: Did you Know? Page 5: Comics Page 6: Falcon Facts Page 7: More
More informationObservant Owls. By: Kohlson Tueller
Observant Owls By: Kohlson Tueller Table of contents What is a owl?... 1 How do owls work?... 2 Where do owls Live?... 3 Types of Owls... 4 Hunter... 6 Younglings... 7 The Hunt of Owls... 8 Glossary...
More informationì<(sk$m)=bdibjh< +^-Ä-U-Ä-U
Genre Comprehension Skill Text Features Science Content Nonfiction Draw Conclusions Captions Call Outs Labels Glossary Plants and Animals Scott Foresman Science 3.4 ì
More informationVancouver Bald Eagle Report 2013
Vancouver Bald Eagle Report 2013 August 2013 Eagle perches unabashedly despite approaching gull Photo by: Martin Passchier Stanley Park Ecology Society has monitored bald eagle nests during the breeding
More information2009 Eagle Nest News from Duke Farms eagle nest Written by Larissa Smith, Assistant Biologist
2009 Eagle Nest News from Duke Farms eagle nest Written by Larissa Smith, Assistant Biologist July 7 - The youngest chick was gone from the nest this morning but has returned to the nest several times
More informationIn collaboration with the NJ Division of Fish & Wildlife s Endangered and Nongame Species Program
In collaboration with the NJ Division of Fish & Wildlife s Endangered and Nongame Species Program 2012 Peregrine News: June 26, 2012 We received word from biologists with the NJ Endangered & Nongame Species
More informationIntroduction. Description. This swan
Introduction This swan used to be called whistling swan, which referred not to its voice, but to the sound made by the slow, powerful beating of the bird s wings in flight usually forms a pair and goes
More informationPygmy Rabbit (Brachylagus idahoensis)
Pygmy Rabbit (Brachylagus idahoensis) Conservation Status: Near Threatened. FIELD GUIDE TO NORTH AMERICAN MAMMALS Pygmy Rabbits dig extensive burrow systems, which are also used by other animals. Loss
More informationThefirst attempt at Brood Manipulation of the Golden Eagle Aquila chrysaetos in Japan
Meyburg. B-U. & R. D. Chancellor eds. 19% Eagle Studies World Working CJroup on Birds of Prey (WW(JBP) Berlin, London & Paris Thefirst attempt at Brood Manipulation of the Golden Eagle Aquila chrysaetos
More informationArdea herodias (Great Blue Heron)
Ardea herodias (Great Blue Heron) Family: Ardeidae (Herons and Egrets) Order: Ciconiiformes (Storks, Herons and Ibises) Class: Aves (Birds) Fig.1. Great blue heron, Ardea herodias. [http://birdingbec.blogspot.com,
More informationThis Coloring Book has been adapted for the Wildlife of the Table Rocks
This Coloring Book has been adapted for the Wildlife of the Table Rocks All images and some writing belong to: Additional writing by: The Table Rocks Environmental Education Program I became the national
More informationSparrowhawks & Goshawks and the Gymnogene
1 Module # 6 Component # 7 Sparrowhawks & Goshawks and the Gymnogene Sparrowhawks and Goshawks There are nine Southern African species in this group, these are the: Ovambo Sparrowhawk Little Sparrowhawk
More informationSummary of 2017 Field Season
Summary of 2017 Field Season Figure 1. The 2017 crew: L to R, Mark Baran, Collette Lauzau, Mark Dodds A stable and abundant food source throughout the chick provisioning period allowed for a successful
More informationA photographic and morphometric guide to aging Gyrfalcon nestlings
265 APPENDIX 1 A photographic and morphometric guide to aging Gyrfalcon nestlings David L. Anderson, Kurt K. Burnham, Ólafur K. Nielsen, and Bryce W. Robinson Anderson D. L., K. K. Burnham, Ó. K. Nielsen,
More informationThe story of Solo the Turnbull National Wildlife Refuge Male Swan
The story of Solo the Turnbull National Wildlife Refuge Male Swan (taken from Turnbull NWR website): https://www.fws.gov/refuge/turnbull/wildlife_and_habitat/trumpeter_swan.html Photographs by Carlene
More informationHabitats provide food, water, and shelter which animals need to survive.
Adaptation Adaptations are the way living organisms cope with environmental stresses and pressures A biological adaptation is an anatomical structure, physiological process or behavioral trait of an organism
More informationSEALANT, WATERPROOFING & RESTORATION INSTITUTE SPRING PEREGRINE FALCONS: DIS RAPTORS OF WORK AT HEIGHT
SEALANT, WATERPROOFING & RESTORATION INSTITUTE SPRING 2017 39.2 PEREGRINE FALCONS: DIS RAPTORS OF WORK AT HEIGHT COVER STORY PEREGRINE FALCONS: DIS RAPTORS OF WORK AT HEIGHT By Kelly Streeter, P.E., Partner,
More informationNight Life Pre-Visit Packet
Night Life Pre-Visit Packet The activities in this pre-visit packet have been designed to help you and your students prepare for your upcoming Night Life program at the St. Joseph County Parks. The information
More informationHe was a year older than her and experienced in how to bring up a brood and survive.
Great Tit 1. Life of a great tit 1.1. Courtship A young female great tit met her mate in a local flock in April. The male established a breeding territory and would sing, sway his head and display his
More informationTropical Screech Owl - Megascops choliba
Tropical Screech Owl - Megascops choliba Formerly Otus choliba Description: A relatively small screech owl with short ear tufts that are raised mostly during daytime. There are grey-brown, brown and rufous
More informationThe Heartfelt Story of our Backyard Bluebirds
The Heartfelt Story of our Backyard Bluebirds My husband and I have had the privilege of being landlords to bluebirds for several years and we also monitor bluebird trails. We learn new things about these
More informationGreat Horned Owl (Bubo virginianus) Productivity and Home Range Characteristics in a Shortgrass Prairie. Rosemary A. Frank and R.
Great Horned Owl (Bubo virginianus) Productivity and Home Range Characteristics in a Shortgrass Prairie Rosemary A. Frank and R. Scott Lutz 1 Abstract. We studied movements and breeding success of resident
More informationKey concepts of Article 7(4): Version 2008
Species no. 62: Yellow-legged Gull Larus cachinnans Distribution: The Yellow-legged Gull inhabits the Mediterranean and Black Sea regions, the Atlantic coasts of the Iberian Peninsula and South Western
More information4. OTHER GOOSE SPECIES IN THE WILLAMETTE VALLEY AND LOWER COLUMBIA RIVER
4. OTHER GOOSE SPECIES IN THE WILLAMETTE VALLEY AND LOWER COLUMBIA RIVER Greater White-Fronted Goose Description High-pitched call, sounds like a laugh or yodel. Pink or orange bill. Adults have black
More informationErnst Rupp and Esteban Garrido Grupo Jaragua El Vergel #33, Santo Domingo Dominican Republic
Summary of Black-capped Petrel (Pterodroma hasitata) Nesting Activity during the 2011/2012 Nesting Season at Loma del Toro and Morne Vincent, Hispaniola Introduction and Methods Ernst Rupp and Esteban
More informationProduction Basics How Do I Raise Poultry for Eggs?
Production Basics How Do I Raise Poultry for Eggs? C H U C K S C H U S T E R U N I V E R S I T Y O F M A R Y L A N D E X T E N S I O N C E N T R A L M A R Y L A N D C F S @ U M D. E D U J E S S I E F L
More informationAVIAN HAVEN Wild Bird Rehabilitation Center
AVIAN HAVEN Wild Bird Rehabilitation Center Featured Cases Second Quarter 2010 1 In this Issue Starts on Slide Woodcocks............... 4 House Finches.............. 12 Osprey................. 23 Northern
More informationBROOD REDUCTION IN THE CURVE-BILLED THRASHER By ROBERTE.RICKLEFS
Nov., 1965 505 BROOD REDUCTION IN THE CURVE-BILLED THRASHER By ROBERTE.RICKLEFS Lack ( 1954; 40-41) has pointed out that in species of birds which have asynchronous hatching, brood size may be adjusted
More informationStudies of less familiar birds 123. Glaucous Gull
Studies of less familiar birds 123. Glaucous Gull Photographs by W, PuchalsM (Plates J 9-42) AN EDITORIAL COMMENT with the photographs and paper by Kay (1947) on the characters of the Glaucous Gull (Larus
More informationCoyote (Canis latrans)
Coyote (Canis latrans) Coyotes are among the most adaptable mammals in North America. They have an enormous geographical distribution and can live in very diverse ecological settings, even successfully
More informationOBSERVATIONS OF PEMBROKE PINES BALD EAGLE NEST - FWC ID# BO-002
OBSERVATIONS OF PEMBROKE PINES BALD EAGLE NEST - FWC ID# BO-002 DATE EGG DAY HATCH DAY FLEDGE DAY ADULTS IN VIEW NESTLNGS FLEDGLNGS ADULTS ON NEST FEEDINGS NOTES 2008-2009 Nesting Season 20081202 1 1 One
More informationSwans & Geese. Order Anseriformes Family Anserinae
Swans & Geese Order Anseriformes Family Anserinae Swans and geese are large waterfowl most often seen in Pennsylvania during fall and spring migrations. They will stop to feed and rest on our state s lakes
More informationAnhinga anhinga (Anhinga or Snake-bird)
Anhinga anhinga (Anhinga or Snake-bird) Family Anhingidae (Anhingas and Darters) Order: Pelecaniformes (Pelicans and Allied Waterbirds) Class: Aves (Birds) Fig. 1. Anhinga, Anhinga anhinga. [http://animaldiversity.ummz.umich.edu/accounts/anhinga_anhinga/,
More informationAnimal Biodiversity. Teacher Resources - High School (Cycle 1) Biology Redpath Museum
Animal Biodiversity Teacher Resources - High School (Cycle 1) Biology Redpath Museum Ecology What defines a habitat? 1. Geographic Location The location of a habitat is determined by its latitude and its
More informationIn the summers of 1977 and 1978, at Gibraltar Point, Lincolnshire, I
Development and behaviour of Little Tern chicks Stephen Davies In the summers of 1977 and 1978, at Gibraltar Point, Lincolnshire, I made observations on 15 nests of Little Terns Sterna albifrons on a shingle
More informationPROTECTING MANLY S PENGUINS
PROTECTING MANLY S PENGUINS NATIONAL PARKS AND WILDLIFE SERVICES VOLUNTARY PENGUIN WARDEN PROGRAM CONFERENCE PRESENTATION WEDNESDAY JULY 23 RD 2008 BACKGROUND: LITTLE PENGUINS EUDYPTULA MINOR o Manly s
More informationPHOTOGRAPHIC STUDIES OF SOME LESS FAMILIAR BIRDS LXVI. HOOPOE
PHOTOGRAPHIC STUDIES OF SOME LESS FAMILIAR BIRDS LXVI. HOOPOE (Plates 47-51) Photographed by C. C. DONCASTER THE Hoopoe (Upupa epops) has already appeared in our series (vol. xlii, plates 15-17), but Mr.
More informationRaptors. Raptor Ratios. SeaWorld/Busch Gardens. 4-8 Classroom Activities. April 2003
April 2003 SeaWorld/Busch Gardens Raptors 4-8 Classroom Activities Raptor Ratios OBJECTIVE The student will calculate ratios and interpret them. The student will calculate a measure of central tendency.
More informationWHAT DOES A BARN OWL LOOK LIKE?
BARN OWL PELLET LAB WHAT DOES A BARN OWL LOOK LIKE? White heart shaped face Whitish belly with dark spots Upper body golden with dark flecks Dark brown eyes Body Length: 15 to 21 inches; long legs Wing
More informationSeven Nests of Rufescent Tiger-Heron (Tigrisoma lineatum)
Seven Nests of Rufescent Tiger-Heron (Tigrisoma lineatum) Steven Furino and Mario Garcia Quesada Little is known about the nesting or breeding behaviour of Rufescent Tiger-Heron (Tigrisoma lineatum). Observations
More informationDid you know that Snowy Plovers (Charadrius alexandrines char-ad-ree-us alex-an-dreen-us):
Did you know that Snowy Plovers (Charadrius alexandrines char-ad-ree-us alex-an-dreen-us): 2 - are listed as a threatened species in the state of Florida? As of 2006, Florida had only an estimated 225
More informationEcology and Management of Ruffed Grouse and American Woodcock
Ecology and Management of Ruffed Grouse and American Woodcock RUFFED GROUSE Weigh 1-1.5 pounds Inconspicuous plumage Males have prominent dark ruffs around neck Solitary most of year FEMALE MALE? GENDER
More informationEgyptian vulture (Neophron percnopterus) 2010 Breeding Season Report- Beypazarı, Turkey
Egyptian vulture (Neophron percnopterus) 2010 Breeding Season Report- Beypazarı, Turkey December 2010 1 Cover photograph: Egyptian vulture taking off in Beypazarı dump site, photographed by Kadir Dabak.
More information(170) COURTSHIP AND DISPLAY OF THE SLAVONIAN GREBE.
(170) COURTSHIP AND DISPLAY OF THE SLAVONIAN GREBE. BY ERIC J. HOSKING, F.R.P.S., M.B.O.U. (Plates 4 and 5.) DURING the nesting season of 1939 I was staying in Scotland and had the opportunity of witnessing
More informationProcnias averano (Bearded Bellbird)
Procnias averano (Bearded Bellbird) Family: Cotingidae (Bellbirds and Cotingas) Order: Passeriformes (Perching Birds) Class: Aves (Birds) Fig. 1. Bearded bellbird, Procnias averano. [http://www.oiseaux.net/photos/steve.garvie/bearded.bellbird.5.html
More informationArctic Tern Migration Simulation
Arctic Tern Migration Simulation Background information: The artic tern holds the world record for the longest migration. It spends summers in the Artic (June-August) and also in the Antarctic (Dec.-Feb.).
More informationBreeding White Storks( Ciconia ciconia at Chessington World of Adventures Paul Wexler
Breeding White Storks(Ciconia ciconia) at Chessington World of Adventures Paul Wexler The White Stork belongs to the genus Ciconia of which there are seven other species incorporated predominantly throughout
More informationPEREGRINE FALCON HABITAT MANAGEMENT GUIDELINES ONTARIO MINISTRY OF NATURAL RESOURCES
PEREGRINE FALCON HABITAT MANAGEMENT GUIDELINES ONTARIO MINISTRY OF NATURAL RESOURCES December 1987 2 Table of Contents Page Introduction...3 Guidelines...4 References...7 Peregrine Falcon Nest Site Management
More informationSlide 1 NO NOTES. Slide 2 NO NOTES. Slide 3 NO NOTES. Slide 4 NO NOTES. Slide 5
Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Left is broiler (for meat) bird (Cobb/Ross), have different nutritional needs to layers. From chick to kill can be as little as 34 days. Commercial layer (ends up
More informationPurple Martin. Adult male Purple Martin
Purple Martin Adult male Purple Martin The Purple Martin is the largest swallow in North America. It is one of the earliest spring migrants in Tennessee arriving by the first of March, and can be found
More informationInterim Madge Lake Loon Survey August 2016
Interim Madge Lake Loon Survey August 2016 Doug Welykholowa Nancy and I were joined by Sharon Korb and Kevin Streat for our latest loon count on Saturday, 27 August. Waters were calm, and we went out later
More information( 142 ) NOTES ON THE GREAT NORTHERN DIVER.
( 142 ) NOTES ON THE GREAT NORTHERN DIVER. BY ERIC B. DUNXOP. THE Great Northern Diver (Gavia immer) is best known in the British Isles as a winter-visitor, though in the Orkneys I have frequently seen
More informationYou may use the information and images contained in this document for non-commercial, personal, or educational purposes only, provided that you (1)
You may use the information and images contained in this document for non-commercial, personal, or educational purposes only, provided that you (1) do not modify such information and (2) include proper
More informationAGE AT FIRST BREEDING AND CHANGE IN PLUMAGE OF KELP GULLS LARUS DOMINICANUS IN SOUTH AFRICA. R. J. M. CRAWFORD*, B. M. DYER* and L.
S. Afr. J. mar. Sci. 22: 27 32 2000 27 AGE AT FIRST BREEDING AND CHANGE IN PLUMAGE OF KELP GULLS LARUS DOMINICANUS IN SOUTH AFRICA R. J. M. CRAWFORD*, B. M. DYER* and L. UPFOLD* In South Africa, kelp gulls
More informationAnalysis of Nest Record Cards for the Buzzard
Bird Study ISSN: 0006-3657 (Print) 1944-6705 (Online) Journal homepage: http://www.tandfonline.com/loi/tbis20 Analysis of Nest Record Cards for the Buzzard C.R. Tubbs To cite this article: C.R. Tubbs (1972)
More informationHawaiian Stilt. Himantopus mexicanus hawaiiensis / Ae o. Facts About Hawaiian Stilt
Hawaiian Stilt Himantopus mexicanus hawaiiensis / Ae o What do you hear as you get out of your car at the pond? A friend called them the Chihuahua of the wetland because of their constant vocalization
More informationCoccyzus minor (Mangrove Cuckoo)
Coccyzus minor (Mangrove Cuckoo) Family: Cuculidae (Cuckoos and Anis) Order: Cuculiformes (Cuckoos, Anis and Turacos) Class: Aves (Birds) Fig. 1. Mangrove cuckoo, Coccyzus minor. [http://birds.audubon.org/birds/mangrove-cuckoo,
More informationThe Oysterbed Site Image Log
Sunday, 23 May 2010. The Black-headed Gulls were still bringing nesting material to South Island. The Oystercatchers are changing over on incubation duty. The bird on the right is relieving its partner
More information